-
I know, I know.. just not a fan of many buttons - actually I don't even have an external mouse but an external trackpad (since I don't need to photoshop all day any more I don't need a mouse and have transitioned to trackpad-only, and frankly I like that way better, mostly because it doesn't make my hand cramp up at all) - sometimes I use the multi finger gestures, but to be honest mostly it's indeed hot corners, even though that's not the quickest of ways..
MX master has plenty of buttons which make it super quick / easy.